19145530 has 16 divisors (see below), whose sum is σ = 34511904. Its totient is φ = 7647120.

The previous prime is 19145509. The next prime is 19145531. The reversal of 19145530 is 3554191.

It is not an unprimeable number, because it can be changed into a prime (19145531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12169 + ... + 13651.

It is an arithmetic number, because the mean of its divisors is an integer number (2156994).

Almost surely, 2^19145530 is an apocalyptic number.

19145530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19145530 is a deficient number, since it is larger than the sum of its proper divisors (15366374).

19145530 is a wasteful number, since it uses less digits than its factorization.

19145530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 19145530 is about 4375.5605355200. The cubic root of 19145530 is about 267.5197178815.

The spelling of 19145530 in words is "nineteen million, one hundred forty-five thousand, five hundred thirty".